R L Prior

Summary

Affiliation: University of Arkansas for Medical Sciences
Country: USA

Publications

  1. ncbi request reprint The chemistry behind antioxidant capacity assays
    Dejian Huang
    Food Science and Technology Program, Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
    J Agric Food Chem 53:1841-56. 2005
  2. ncbi request reprint Characterization of anthocyanins and proanthocyanidins in some cultivars of Ribes, Aronia, and Sambucus and their antioxidant capacity
    Xianli Wu
    Agriculture Research Service, U S Department of Agriculture, Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 52:7846-56. 2004
  3. ncbi request reprint Identification and characterization of anthocyanins by high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry in common foods in the United States: vegetables, nuts, and grains
    Xianli Wu
    Arkansas Children s Nutrition Center, Agriculture Research Service, U S Department of Agriculture, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 53:3101-13. 2005
  4. ncbi request reprint Standardized methods for the determination of antioxidant capacity and phenolics in foods and dietary supplements
    Ronald L Prior
    U S Department of Agriculture, Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 53:4290-302. 2005
  5. doi request reprint Whole berries versus berry anthocyanins: interactions with dietary fat levels in the C57BL/6J mouse model of obesity
    Ronald L Prior
    USDA Arkansas Children s Nutrition Center, 1212 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 56:647-53. 2008
  6. ncbi request reprint Anthocyanins: structural characteristics that result in unique metabolic patterns and biological activities
    Ronald L Prior
    Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, AR 72202, USA
    Free Radic Res 40:1014-28. 2006
  7. ncbi request reprint Plasma antioxidant capacity changes following a meal as a measure of the ability of a food to alter in vivo antioxidant status
    Ronald L Prior
    USDA Arkansas Children s Nutrition Center, Little Rock, AR 72202, USA
    J Am Coll Nutr 26:170-81. 2007
  8. ncbi request reprint Occurrence and biological significance of proanthocyanidins in the American diet
    Ronald L Prior
    US Department of Agriculture, Agricultural Research Service, Arkansas Children s Nutrition Center, 1120 Marshall St, Little Rock, AR 72202, USA
    Phytochemistry 66:2264-80. 2005
  9. ncbi request reprint Identification and urinary excretion of metabolites of 5-(hydroxymethyl)-2-furfural in human subjects following consumption of dried plums or dried plum juice
    Ronald L Prior
    U S Department of Agriculture, Agriculture Research Service, Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 54:3744-9. 2006
  10. doi request reprint Purified berry anthocyanins but not whole berries normalize lipid parameters in mice fed an obesogenic high fat diet
    Ronald L Prior
    United States Department of Agriculture, Little Rock, AR, USA
    Mol Nutr Food Res 53:1406-18. 2009

Collaborators

Detail Information

Publications60

  1. ncbi request reprint The chemistry behind antioxidant capacity assays
    Dejian Huang
    Food Science and Technology Program, Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
    J Agric Food Chem 53:1841-56. 2005
    ..To comprehensively study different aspects of antioxidants, validated and specific assays are needed in addition to these two commonly accepted assays...
  2. ncbi request reprint Characterization of anthocyanins and proanthocyanidins in some cultivars of Ribes, Aronia, and Sambucus and their antioxidant capacity
    Xianli Wu
    Agriculture Research Service, U S Department of Agriculture, Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 52:7846-56. 2004
    ..The total antioxidant capacity varied from 21 micromol of TE/g of FW in Careless gooseberry to 161 micromol of TE/g of FW in chokeberry. Total phenolics in the berries in general paralleled hydrophilic antioxidant capacity...
  3. ncbi request reprint Identification and characterization of anthocyanins by high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry in common foods in the United States: vegetables, nuts, and grains
    Xianli Wu
    Arkansas Children s Nutrition Center, Agriculture Research Service, U S Department of Agriculture, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 53:3101-13. 2005
    ..This paper presents complete HPLC profiles and MS spectrometric data, obtained under the same experimental conditions, for common vegetables, pistachio nuts, and sorghum that contain anthocyanins...
  4. ncbi request reprint Standardized methods for the determination of antioxidant capacity and phenolics in foods and dietary supplements
    Ronald L Prior
    U S Department of Agriculture, Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 53:4290-302. 2005
    ..The TEAC assay represents a second ET-based method. Other assays may need to be considered in the future as more is learned about some of the other radical sources and their importance to human biology...
  5. doi request reprint Whole berries versus berry anthocyanins: interactions with dietary fat levels in the C57BL/6J mouse model of obesity
    Ronald L Prior
    USDA Arkansas Children s Nutrition Center, 1212 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 56:647-53. 2008
    ..Anthocyanins fed as the whole blueberry did not prevent and may have actually increased obesity. However, feeding purified anthocyanins from blueberries or strawberries reduced obesity...
  6. ncbi request reprint Anthocyanins: structural characteristics that result in unique metabolic patterns and biological activities
    Ronald L Prior
    Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, AR 72202, USA
    Free Radic Res 40:1014-28. 2006
    ..Anthocyanins may play an important role in health promotion in terms of obesity prevention, cardiovascular health, anti-inflammatory and anti-cancer effects...
  7. ncbi request reprint Plasma antioxidant capacity changes following a meal as a measure of the ability of a food to alter in vivo antioxidant status
    Ronald L Prior
    USDA Arkansas Children s Nutrition Center, Little Rock, AR 72202, USA
    J Am Coll Nutr 26:170-81. 2007
    ....
  8. ncbi request reprint Occurrence and biological significance of proanthocyanidins in the American diet
    Ronald L Prior
    US Department of Agriculture, Agricultural Research Service, Arkansas Children s Nutrition Center, 1120 Marshall St, Little Rock, AR 72202, USA
    Phytochemistry 66:2264-80. 2005
    ..These data will provide an opportunity to examine the association between PA intake and health and disease outcomes in epidemiological studies. PA analysis and the significance of PAs in nutrition and diet are reviewed...
  9. ncbi request reprint Identification and urinary excretion of metabolites of 5-(hydroxymethyl)-2-furfural in human subjects following consumption of dried plums or dried plum juice
    Ronald L Prior
    U S Department of Agriculture, Agriculture Research Service, Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 54:3744-9. 2006
    ..2% and 14.2% of the I dose during the first 6 h after consumption of dried plum juice and dried plums, respectively. I seems to be metabolized rapidly to glycine conjugates and other metabolites and excreted in the urine...
  10. doi request reprint Purified berry anthocyanins but not whole berries normalize lipid parameters in mice fed an obesogenic high fat diet
    Ronald L Prior
    United States Department of Agriculture, Little Rock, AR, USA
    Mol Nutr Food Res 53:1406-18. 2009
    ....
  11. ncbi request reprint Fruits and vegetables in the prevention of cellular oxidative damage
    Ronald L Prior
    Arkansas Children s Nutrition Center and the US Department of Agriculture, Agriculture Research Service, Little Rock, AR 72202, USA
    Am J Clin Nutr 78:570S-578S. 2003
    ..However, quercetin metabolites seem to maintain at least part of their antioxidant activity in vivo. A potential role for food flavonoids and polyphenolics as antioxidants is discussed...
  12. doi request reprint Urinary excretion of phenolic acids in rats fed cranberry
    Ronald L Prior
    USDA ARS, USA
    J Agric Food Chem 58:3940-9. 2010
    ....
  13. doi request reprint Purified blueberry anthocyanins and blueberry juice alter development of obesity in mice fed an obesogenic high-fat diet
    Ronald L Prior
    Agriculture Research Service, U S Department of Agriculture, Arkansas Children s Nutrition Center, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 58:3970-6. 2010
    ..Additional studies are needed to determine factors responsible for the differing responses of blueberry juice and whole blueberry in preventing the development of obesity...
  14. doi request reprint Dietary black raspberry anthocyanins do not alter development of obesity in mice fed an obesogenic high-fat diet
    Ronald L Prior
    USDA ARS, USA
    J Agric Food Chem 58:3977-83. 2010
    ..The sugar moiety on the anthocyanidins may be an important factor in determining the response in the development of obesity...
  15. ncbi request reprint Identification of procyanidins and anthocyanins in blueberries and cranberries (Vaccinium spp.) using high-performance liquid chromatography/mass spectrometry
    R L Prior
    U S Department of Agriculture, Agriculture Research Service, Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas, USA
    J Agric Food Chem 49:1270-6. 2001
    ..Monomer, dimers, and A-type trimers were the primary procyanidins, with only trace levels of the B-type trimers and A-type tetramers and with an absence of the higher oligomers in cranberry extract and juices...
  16. doi request reprint Multi-laboratory validation of a standard method for quantifying proanthocyanidins in cranberry powders
    Ronald L Prior
    USDA ARS, Arkansas Children s Nutrition Center, Little Rock, AR 72202, USA
    J Sci Food Agric 90:1473-8. 2010
    ....
  17. ncbi request reprint Assays for hydrophilic and lipophilic antioxidant capacity (oxygen radical absorbance capacity (ORAC(FL))) of plasma and other biological and food samples
    Ronald L Prior
    U S Department of Agriculture, Agriculture Research Service, Arkansas, Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 51:3273-9. 2003
    ..9% of the total antioxidant capacity of the protein free plasma in two independent studies of 6 and 10 subjects, respectively. Methods are described for application of the assay techniques to other types of biological and food samples...
  18. ncbi request reprint Antioxidant capacity and polyphenolic components of teas: implications for altering in vivo antioxidant status
    R L Prior
    US Department of Agriculture, Agriculture Research Service, Jean Mayer Human Nutrition Research Center on Aging at Tufts University, Boston, Massachusetts 02111
    Proc Soc Exp Biol Med 220:255-61. 1999
    ..However, with the variation that exists in antioxidant capacity with various tea preparations, measures of antioxidant capacity intake are critical to the study of intake and health outcomes and/or biomarkers of health outcomes...
  19. ncbi request reprint Lipophilic and hydrophilic antioxidant capacities of common foods in the United States
    Xianli Wu
    Arkansas Children s Nutrition Center and Agricultural Research Service, U S Department of Agriculture, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 52:4026-37. 2004
    ..Total hydrophilic and lipophilic antioxidant capacity intakes were calculated to be 5558 and 166 micromol of TE/day, respectively, on the basis of data from the USDA Continuing Survey of Food Intakes by Individuals (1994-1996)...
  20. ncbi request reprint Fate of anthocyanins and antioxidant capacity in contents of the gastrointestinal tract of weanling pigs following black raspberry consumption
    Xianli Wu
    Arkansas Children s Nutrition Center, Agriculture Research Service, U S Department of Agriculture, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 54:583-9. 2006
    ..TAC and total ACNs remained high 4 h after feeding, which indicates that ACNs provide significant antioxidant protection in the environment of the gut epithelium...
  21. doi request reprint In utero and lactational exposure to blueberry via maternal diet promotes mammary epithelial differentiation in prepubescent female rats
    Xianli Wu
    Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, AR 72202, USA
    Nutr Res 29:802-11. 2009
    ..Our studies identify developing mammary glands as early targets of blueberry-associated bioactive components, possibly through systemic effects on epithelial PTEN signaling...
  22. ncbi request reprint Pelargonidin is absorbed and metabolized differently than cyanidin after marionberry consumption in pigs
    Xianli Wu
    U S Department of Agriculture, Agriculture Research Service, Arkansas Children s Nutrition Center, Little Rock, AR 72202, USA
    J Nutr 134:2603-10. 2004
    ..Urinary recovery of the acylated anthocyanin was lower than that of nonacylated anthocyanins...
  23. ncbi request reprint Screening of foods containing proanthocyanidins and their structural characterization using LC-MS/MS and thiolytic degradation
    Liwei Gu
    Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202
    J Agric Food Chem 51:7513-21. 2003
    ....
  24. ncbi request reprint Determination of soyasaponins in soy with LC-MS following structural unification by partial alkaline degradation
    Liwei Gu
    School of Food Science and Technology and Analytical and Testing Center, Wuxi University of Light Industry, 170 Huihe Road, Wuxi, Jiangsu, 214036, China
    J Agric Food Chem 50:6951-9. 2002
    ..The quantification limits of soyasaponins in group A and group B were 1.74 and 1.89 ng injected on column with recovery rates of 94.1% +/- 4.2% and 96.9% +/- 2.9%, respectively...
  25. pmc Effects of N-acetylcysteine on ethanol-induced hepatotoxicity in rats fed via total enteral nutrition
    Martin J J Ronis
    Arkansas Children s Nutrition Center University of Arkansas for Medical Sciences, Little Rock, AR, USA
    Free Radic Biol Med 39:619-30. 2005
    ..These data suggest that ethanol-induced oxidative stress can contribute to inflammation and liver injury even in the absence of Kupffer cell activation by endotoxemia...
  26. ncbi request reprint Concentrations of anthocyanins in common foods in the United States and estimation of normal consumption
    Xianli Wu
    USDA Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 54:4069-75. 2006
    ..Of the different aglycones, cyanidin, delphinidin, and malvidin were estimated to contribute 45, 21, and 15%, respectively, of the total ACN intake. Nonacylated contributed 77% compared to 23% from acylated ACNs...
  27. ncbi request reprint Fractionation of polymeric procyanidins from lowbush blueberry and quantification of procyanidins in selected foods with an optimized normal-phase HPLC-MS fluorescent detection method
    Liwei Gu
    Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 50:4852-60. 2002
    ....
  28. ncbi request reprint Systematic identification and characterization of anthocyanins by HPLC-ESI-MS/MS in common foods in the United States: fruits and berries
    Xianli Wu
    Agriculture Research Service, U S Department of Agriculture, Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 53:2589-99. 2005
    ..For the first time, this paper presents complete anthocyanin HPLC profiles and MS spectral data of common fruits using the same uniform experimental conditions...
  29. doi request reprint Phenolic acids in black raspberry and in the gastrointestinal tract of pigs following ingestion of black raspberry
    Xianli Wu
    USDA Arkansas Children s Nutrition Center, University of Arkansas for Medical Sciences, AR, USA
    Mol Nutr Food Res 53:S76-84. 2009
    ..49 +/- 4.31 micromol (homoprotocatechuic acid). Total phenolic acids in the GI tract were 49.32 +/- 16.37 micromol (mean +/- SEM, n = 5). Phenolic acids measured in the GI tract accounted for only 6.31% of the degraded anthocyanins...
  30. pmc Lack of efficacy of blueberry in nutritional prevention of azoxymethane-initiated cancers of rat small intestine and colon
    Frank A Simmen
    Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, 4301 W Markham Street, Little Rock, AR 72205, USA
    BMC Gastroenterol 9:67. 2009
    ..Previous work indicated an inhibitory effect of consumed blueberry (BB) on formation of aberrant crypt foci (ACF) in colons of male Fisher F344 rats (inbred strain). However, effects of BB on colon tumors and in both genders are unknown...
  31. ncbi request reprint Plasma antioxidant measurements
    Ronald L Prior
    Arkansas Children s Nutrition Center, Little Rock, AR 72202, USA
    J Nutr 134:3184S-3185S. 2004
  32. doi request reprint Soy protein diet alters expression of hepatic genes regulating fatty acid and thyroid hormone metabolism in the male rat
    Frank A Simmen
    Arkansas Children s Nutrition Center, Little Rock, AR 72202, USA
    J Nutr Biochem 21:1106-13. 2010
    ..Identification of the regulation, by genistein and soy protein, of iodothyronine deiodinase synthesis has potential applications for treatment and prevention of fatty liver disease and obesity...
  33. ncbi request reprint Concentrations of proanthocyanidins in common foods and estimations of normal consumption
    Liwei Gu
    U S Department of Agriculture, Agriculture Research Service, Arkansas Children s Nutrition Center, Little Rock, AR 72202, USA
    J Nutr 134:613-7. 2004
    ..3 mg and 26.9 mg, respectively, based on the recommendations of the American Academy of Pediatrics. This study supports the concept that PAs account for a major fraction of the total flavonoids ingested in Western diets...
  34. ncbi request reprint Isoflavone conjugates are underestimated in tissues using enzymatic hydrolysis
    Liwei Gu
    Arkansas Children s Nutrition Center, Department of Physiology Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 53:6858-63. 2005
    ..2-0.25 nmol/g range, far below the concentrations required for most in vitro effects of genistein or daidzein...
  35. ncbi request reprint Postprandial increases in serum antioxidant capacity in older women
    G Cao
    Jean Mayer Human Nutrition Research Center on Aging at Tufts University, Agriculture Research Service, United States Department of Agriculture, Boston, Massachusetts 02111, USA
    J Appl Physiol 89:877-83. 2000
    ..These results indicate that food intake, even if low in antioxidants, can increase the serum total antioxidant activity...
  36. ncbi request reprint Oxygen radical absorbance capacity (ORAC) and phenolic and anthocyanin concentrations in fruit and leaf tissues of highbush blueberry
    M K Ehlenfeldt
    Marucci Center for Blueberry and Cranberry Research and Extension, Agricultural Research Service, U.S. Department of Agriculture, Chatsworth, New Jersey 08019, USA
    J Agric Food Chem 49:2222-7. 2001
    ..An investigation of ORAC values in a family of 44 cv. Rubel x Duke seedlings showed negative epistasis for ORAC values, suggesting Rubel may have gene combinations contributing to ORAC that are broken up during hybridization...
  37. ncbi request reprint LC/MS/MS characterization of phenolic constituents in dried plums
    Nianbai Fang
    Arkansas Children s Nutrition Center, 1120 South Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 50:3579-85. 2002
    ..The diagnostic fragmentation patterns of different phenolics are presented on the basis of electrospray ionization (ESI) MS/MS data of components in dried plums and fourteen authentic standards...
  38. doi request reprint Sorghum extrusion increases bioavailability of catechins in weanling pigs
    Liwei Gu
    Arkansas Children s Nutrition Center and Agricultural Research Service, U S Department of Agriculture, Little Rock 72202, USA
    J Agric Food Chem 56:1283-8. 2008
    ..Procyanidin dimers were not detected in plasma or urine. The levels of catechins were close to zero in plasma and urine of pigs fed white sorghum. In conclusion, extrusion improved the bioavailability of catechins in sorghum...
  39. ncbi request reprint Liquid chromatographic/electrospray ionization mass spectrometric studies of proanthocyanidins in foods
    Liwei Gu
    Arkansas Children s Nutrition Center, 1120 Marshall Street, Little Rock, Arkansas 72202, USA
    J Mass Spectrom 38:1272-80. 2003
    ..Fragmentation patterns were proposed based on our data obtained by ESI-MS/MS and ESI time-of-flight MS...
  40. ncbi request reprint Absorption and metabolism of anthocyanins in elderly women after consumption of elderberry or blueberry
    Xianli Wu
    U S Department of Agriculture, Agriculture Research Service, Arkansas Children s Nutrition Center, Little Rock 72202, USA
    J Nutr 132:1865-71. 2002
    ....
  41. ncbi request reprint Procyanidin and catechin contents and antioxidant capacity of cocoa and chocolate products
    Liwei Gu
    Arkansas Children s Nutrition Center, ARS USDA, and Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 54:4057-61. 2006
    ..These results indicate that NFCS is correlated with AOC and PC in cocoa and chocolate products. Alkalizing dramatically decreased both the procyanidin content and antioxidant capacity, although not to the same extent...
  42. ncbi request reprint Sorghum bran in the diet dose dependently increased the excretion of catechins and microbial-derived phenolic acids in female rats
    Liwei Gu
    Arkansas Children s Nutrition Center, Agricultural Research Service, U S Department of Agriculture, 1212 Marshall Street, Little Rock, Arkansas 72202, USA
    J Agric Food Chem 55:5326-34. 2007
    ..Catechins and procyanidins in sorghum were bioavailable; however, bacteria-derived phenolic acids were the predominant metabolites of procyanidins. Procyanidins degraded in the gastrointestinal tract. Depolymerization was not observed...
  43. ncbi request reprint Aglycones and sugar moieties alter anthocyanin absorption and metabolism after berry consumption in weanling pigs
    Xianli Wu
    U S Department of Agriculture, Agriculture Research Service, Arkansas Children s Nutrition Center, Little Rock, AR 72202, USA
    J Nutr 135:2417-24. 2005
    ..The data clearly demonstrate that the aglycone and the sugar moieties can alter the apparent absorption and metabolism of ACNs...
  44. ncbi request reprint Metabolic phenotype of isoflavones differ among female rats, pigs, monkeys, and women
    Liwei Gu
    Arkansas Children s Nutrition Center, Little Rock, AR 72202, USA
    J Nutr 136:1215-21. 2006
    ..Thus, there were significant interspecies differences in isoflavone metabolism, and the overall metabolic profile of pigs was closer to that of women than that of rats or monkeys...
  45. ncbi request reprint Antioxidant capacity and other bioactivities of the freeze-dried Amazonian palm berry, Euterpe oleraceae mart. (acai)
    Alexander G Schauss
    Natural and Medicinal Products Research, AIMBR Life Sciences, 4117 South Meridian, Puyallup, Washington 98373, USA
    J Agric Food Chem 54:8604-10. 2006
    ..Acai was found to be a potential cyclooxygenase (COX)-1 and COX-2 inhibitor. It also showed a weak effect on lipopolysaccharide (LPS)-induced nitric oxide but no effect on either lymphocyte proliferation and phagocytic capacity...
  46. ncbi request reprint Screening methods to measure antioxidant activity of sorghum (sorghum bicolor) and sorghum products
    Joseph M Awika
    Cereal Quality Lab, Soil and Crop Sciences Department, Texas A and M University, College Station, Texas 77843, USA
    J Agric Food Chem 51:6657-62. 2003
    ..There is a need to standardize these methods to allow for data comparisons across laboratories...
  47. ncbi request reprint Novel fluorometric assay for hydroxyl radical prevention capacity using fluorescein as the probe
    Boxin Ou
    Brunswick Laboratories, 6 Thatcher Lane, Wareham, Massachusetts 02571, USA
    J Agric Food Chem 50:2772-7. 2002
    ..A wide range of phenolic antioxidants is analyzed, and the hydroxyl radical prevention capacity is mainly due to the metal-chelating capability of the compounds...
  48. ncbi request reprint Oxidative stress in humans training in a cold, moderate altitude environment and their response to a phytochemical antioxidant supplement
    Matthew C Schmidt
    University of Utah, Salt Lake City 84112, USA
    Wilderness Environ Med 13:94-105. 2002
    ....
  49. ncbi request reprint The validity and reproducibility of food-frequency questionnaire-based total antioxidant capacity estimates in Swedish women
    Susanne Rautiainen
    Division of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
    Am J Clin Nutr 87:1247-53. 2008
    ..Total antioxidant capacity (TAC) provides an assessment of antioxidant activity and synergistic interactions of redox molecules in foods and plasma...
  50. ncbi request reprint Soy protein with and without isoflavones fails to substantially increase postprandial antioxidant capacity
    Karrie M Heneman
    Department of Nutrition, University of California, Davis, CA 95616 8669, USA
    J Nutr Biochem 18:46-53. 2007
    ..It can be concluded that, on an acute basis, a significant increase in serum antioxidant capacity is not detectable following consumption of soy protein...
  51. ncbi request reprint Anthocyanin and proanthocyanidin content in selected white and red wines. Oxygen radical absorbance capacity comparison with nontraditional wines obtained from highbush blueberry
    Concepción Sánchez-Moreno
    Nutrition and Neurocognitive Laboratory, Jean Mayer Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, Massachusetts 02111, USA
    J Agric Food Chem 51:4889-96. 2003
    ..04 +/- 0.81 mmol of TE, 0.47 +/- 0.15 mmol of TE, and 2.42 +/- 0.88 mmol of TE of ORAC(PE)/day, respectively...
  52. doi request reprint Processing and storage effects on monomeric anthocyanins, percent polymeric color, and antioxidant capacity of processed blackberry products
    Tiffany J Hager
    Department of Food Science, University of Arkansas, 2650 North Young Avenue, Fayetteville, Arkansas 72704, USA
    J Agric Food Chem 56:689-95. 2008
    ..There were no changes in ORAC FL or PCL for processed products throughout long-term storage. No significant changes in antioxidant capacity or anthocyanin content were observed in IQF fruit during long-term storage at -20 degrees C...
  53. ncbi request reprint High-throughput assay of oxygen radical absorbance capacity (ORAC) using a multichannel liquid handling system coupled with a microplate fluorescence reader in 96-well format
    Dejian Huang
    Brunswick Laboratories, 6 Thatcher Lane, Wareham, Massachusetts 02571, USA
    J Agric Food Chem 50:4437-44. 2002
    ..The mean of intra- and interday CVs was <or=15%, and the limit of detection and limit of quantitation were 5 and 6.25 microM, respectively...
  54. ncbi request reprint Pycnogenol does not impact the antioxidant or vitamin C status of healthy young adults
    Kathryn Silliman
    Department of Biological Sciences Program in Nutrition and Food Science, California State University, Chico 95929, USA
    J Am Diet Assoc 103:67-72. 2003
    ....
  55. ncbi request reprint Consumption of cherries lowers plasma urate in healthy women
    Robert A Jacob
    U S Department of Agriculture ARS Western Human Nutrition Research Center, University of California at Davis, Davis, CA 95616, USA
    J Nutr 133:1826-9. 2003
    ..The trend toward decreased inflammatory indices (CRP and NO) adds to the in vitro evidence that compounds in cherries may inhibit inflammatory pathways...
  56. ncbi request reprint Processing of sorghum (Sorghum bicolor) and sorghum products alters procyanidin oligomer and polymer distribution and content
    Joseph M Awika
    Cereal Quality Lab, Texas A and M University, College Station, Texas 77843 2474, USA
    J Agric Food Chem 51:5516-21. 2003
    ..Processing changes not only the content of procyanidins in sorghum products but also the relative ratio of the different molecular weights...
  57. ncbi request reprint Changes in polyphenols of the seed coat during the after-darkening process in pinto beans (Phaseolus vulgaris L.)
    Clifford W Beninger
    Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK, Canada S7N 5A8
    J Agric Food Chem 53:7777-82. 2005
    ..A catechin-kaempferol adduct was tentatively identified in both lines by LC-MS/MS, and the concentration increased in the seed coats after aging...
  58. doi request reprint Ellagitannin composition of blackberry as determined by HPLC-ESI-MS and MALDI-TOF-MS
    Tiffany J Hager
    Department of Food Science, University of Arkansas, 2650 North Young Avenue, Fayetteville, Arkansas 72704, USA
    J Agric Food Chem 56:661-9. 2008
    ..This study determined the presence of several possible isomeric forms of ellagitannins previously unidentified in fruit and presents a possible analytical HPLC method for the analysis of the major ellagitannins present in the fruit...
  59. ncbi request reprint Phytochemical and nutrient composition of the freeze-dried amazonian palm berry, Euterpe oleraceae mart. (acai)
    Alexander G Schauss
    Natural and Medicinal Products Research, AIMBR Life Sciences, 4117 South Meridian, Puyallup, Washington 98373, USA
    J Agric Food Chem 54:8598-603. 2006
    ..The total sterols accounted for 0.048% by weight of powder. The three sterols B-sitosterol, campesterol, and sigmasterol were identified. A complete nutrient analysis is also presented. Microbiological analysis was also performed...
  60. ncbi request reprint Bioavailablility of elderberry anthocyanins
    Paul E Milbury
    Antioxidants Research Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Room 507, 711 Washington St Boston, MA 02111, USA
    Mech Ageing Dev 123:997-1006. 2002
    ..The current findings appear to refute assumptions that anthocyanins are not absorbed in their unchanged glycosylated forms in humans...